Car-door-control equipment



Sept. 4, 1928.

G. MACLOSKIE ET AL CAR noon CONTROL EQUIPMENT Irv/ entors: George Macioskie, Charles A.Ives

.Their Attorneg Patented Sept. 4, 1928.

1,683,142- UNITED STATES PATENT OFFICE.

GEORGE MACLOSKIE AND CHARLES A. IVES, OF ERIE, PENNSYLVANIA, ASSIGNORS TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

CAR-DOOR-CONTROL EQUIPMENT.

Application filed February 23, 1921. Serial No. 447,358.

Our invention relates to car door control equipments, and particularly to such equlpments for use on one-man cars which are ar ranged to be controlled from either end.

One-man cars of the above type are usually provided with a door at each end and these doors are so arranged that the motorman can open and close the door only at the end from which he is operating the car. It is sometimes desirable, however, that both doors be controlled by the motorman :trom the operating end and it is an object t our invention to provide an arrangement Whereby the motorinan may control both doorssimultaneously or the door at the operating end only.

Our invention will be better understood from the following description taken in connection with the accompanying drawing, and

its scope will be pointed out in the appended V pipe 1.2 are connected to the exhaust pipe claims.

In the accompanying drawing Fig. 1 is a diagrammatic View partially in section of a car door and brake control equipment embodying our invention. As shown in the drawing, the brake equipment comprises a motormans valve 1 at one end of the car, a motornians valve 1 at the opposite end, a reservoir pipe 2 connected to the main reservoir 3, a straight air pipe at, an emergency pipe 5, an emergency valve 6 and a brake cylinder 7. This brake equipment is standapparatusand since it is well knownan the art, it is believed that a further description thereof is unnecessary.

The motormans valvel in addition to be ing arranged to control the brakes ot' the car also controls a fluid operated door engine 8 for operating the car door at that end of the car. The motormans valve 1 is also arranged to control a fluid operated door engine 9 for operating the car door at that end of the 'car.

The door engines 8 and 9 are provided with door opening pipes 10 and 11 and door closing pipes 12 and 13 respectively. In the system shown in the drawing, the

inotormans valves 1 and 1, which may shown in order to simplify the drawing. The connections which are made by the motormans valve 1. when in its different operating positions are the same as those shown in the diagrammatic development of the motormans valve 1.

The motormans valve 1 is arranged so that when it is in the release, door closed, service and lap positions the door opening pipe 10 is connected to the exhaust pipe 26 by a passage 27 and the door closing pipe 12 is connected to the emergency pipe by a passage 28. lVhen the motormans valve 1 is in the door open position, the door closing pipe 12 is connected to the exhaust pipe 26 by a passage29 and the door opening pipe is connected to the reservoir pipe 2 by a passage 30. When the motormans valve 1 is in the emergency position, the door opening pipe 10 and the door closing 26 by a passage 31.

The motormans valve 1' is arranged in a similar manner so that the door opening pipe 11 is connectedto the exhaust pipe 32 and the door closing pipe 13 is connected to the emergency pipe 5 when the valve 1 is in the release, door closed, service and lap positions; and the door closing pipe 13 is connected to the exhaust pipe 32 and the door opening pipe 11 is connected to the reservoir pipe when the valve 1 is in the door open position; and the door opening pipe 11 and door closing pipe 13 are connected to the exhaust pipe 32 when the valve 1 is in the emergency position. The door engines are arranged in any suitable manner, examples of which are well known in the art, so that when 'fiuid pressure is admitted to the door opening side thereof and the door closing side thereofis connected to atmosphere, the door engines open the car doors controlled thereby, and when fluid pressure is admitted to, the door closing side thereof and the door opening side thereof is connected to atmosphere, the door engines close the doors controlled thereby. Therefore, when the motormans valve 1 is in the release, door closed, service and lap positions the door engine 8 maintains the doors controlled thereby closed, and when the valve 1 is in the door open position the door engine 8 opens the doors controlled thereby. Similarly, the door en gine 9 maintains the doors controlled there \Vith the arrangement heretofore de scribed, itwill be observed thateach motormaiisvalve controls, only one doorengine. Sometimes it is desirable to'oper'ate both usur engines simtiltaneously from one end and at othert-rmes itis desirable'to operate only one door engine. orderthat this desired result may be 'obtjainedpth'e following arrangement'is shown n the drawmgfor ac conipiishingthis r sult; A, a s

The door opening pipes and 11 are coiinected together by the pipes 143 and 15. The pipe His cdnnectedtothe door opening pipe 11 by of a doublecheck valve 16 preferably of the well known ball type and sectionally "illustrated on a relatively large scale'inFi 2. This checkvalve is so arrangedtha tj wheh the door opening pipe 11 is shpplied withfluidfiinder pressure through the momm es va ve 1, 'co nmuhication be tweenpipe 14 and the door opening side of the door engines is cut off,and,wheiifluid under pressure is admitted to the pipe 14 communication is-c'ut oil? between the door opehing ipe 11 and the, door opening side ofthe door-en ine 9 and communication is established between pipefl ifand the door opening side ofthfe doorengine A cut 011' Cook His placed in the 'pi pe 14 at the pposite: end of'the car from where the motorma'nislvalve l' f is installed. "This cutoff cock which is similar in construction to V the off cock 19 sectionally illustrated on a relatively large scale. in 3 is so arranged that in one position it establishes communicatibn between the door opening pipe 10 and pipel i and in another position cuts a this communication between the I pipes 10ahd14 and; connects the ipipel to atmosphere. "The pipe 15 is connected to thefdoor' opening pipe lOiby means of a double check valve 18 of 'thefsa'me' construction as the check valve 16. fThis check valve 18 isso arranged that when fluid under 'pi'essure is supplied to the door opening pipe through the mot-ormans valve 1 communication is cut dffbetween the door opening pipe 10 and the pipe15, and whenfiuid under pressure is "admitted to thepipe communication iscutoflt between the door'opening pipe'10 and the door opening side of the door engine 8, and communication is established between pipe 15 and the door open .ing' side of the door engine 8. A cut out cock 19 is placed in the pipe 15 at the opposite end of the car from Where the motoris arranged so that in onepositi'o'n est-ab lishes communlcation between the door open ing pipe 11an'd pipe 15 and in another posi-' tion cuts off this communication between the pipes lland 15 and establishes communicationbet'sveen pipe 15 and atmosphere.

The communication between the door closdoor engine 8 is controlled by a door operatingvalVe which is sectionally illustrated on an /mushy large scale in Fi 4. This door operating "valve comprises a side of which is subject to the pressurein the pipelii and thejother'side of which is subject to the pressure of a spring 23. When fiiimbie beat valve 21 operatedby a diaphragm 22, one,

.mans valve 1 is installed. This cut out cock ing pipe 12 and'the door closing side of the there is no pressurein the pipe 15 the valve 20 is held in the position shown in the drawing, in which position thedouble beat valve 21 establishes communication between the door closing pipe 12 and the doorclhsing side of the door engine 8. When fluid under pressure is admitted to the pipe 15 the dia phragm 22 of the valve 2021s moved downwardly and the double beat valve'21 cuts 1 off communication between the doorclosing pipe 12 and the door closingside of the door engine 8 andestabl'ishes commuhication betweenthe doorclosing side of the door engine 8 and the passage 33 which is connected to atmosphere.

The communication between the door clo's ing pipe 13 and the door closing side of the (1001" engine 9 is controlled bya door operatmg valve 25 of the same construction as the valve 20. This'valve 25 is so arranged that when there is no fluid under pressure in the pipe 14 communication is established between the door closing pipe 13 and the door closing side of the door engine 9, but when there isfluidundergpressure in the pipe 14 communication between the door closing pipe 13 and the door closing side; of the door" engine 9 is cut off andcommunication estab li'shedbetweenthedoor closingside of the 1 door engine Sand atmosphere.

lilo

The operation of an equipment shown is as follows: Let it be assumed that the motormans valve 1 is at the'operating end of the car. If it isdesired tocontrol the door at V the operating end only,- thecut out cook 17 is j turned so that it cuts oil communication be tween door opening pipe 10 and the pipe 14 and establishes communication between the pipe 14 andatmosphere. The out out cock 19 is also turned so that it cutsofi communication between thedoor opening pipe 11 and Q pipe 15 and establishes communication be-' tween the pipe 15 and atmosphere. The

motormans valve fat the non-operatingend is placed in lap, position, which is a door closing position, and therefore the door closing pipe 13' at the non-operating end is supplied with "fluid under pressure from the emergency pipe and the door opening pipe 11 at the same end is connected to atmo phere. It will be apparent therefore that thedoor at the non-operating end is held closed independently of the motormans valve at the operating end.

The brake equipment on the car may be controlled in thensual manner from the operating end by moving the motormans valve 1 to the various brake positions. The door at the operating end may be controlled also by 'moving themotormans valve lto the various door positions. For example, if it is desired to open the door at the operating end the brake'valve 1 is moved to its door opening position in which fluid under pressure is supplied from the reservoir pipe 2 to the door opening pipe and the door closing pipe 12 is connected to atmosphere. No fluid under pressure flows from the pipe 10 to the pipe 15 because the'fluid pressure in the pipe 10 moves the check valve 18 so that it cuts oil communication betweenpipes 10 and 15. In order to prevent the pressure from building up in the pipe. 15 due to the check valve 18 leaking, the valve 19, which is at the non-operating end, is arranged to connect the pipe 15 to atmosphere when it is operated to cut off communication between pipes 15 and 11. Sincethere is no fluid under pressure in the pipe 15 at this time, the double beat valve 21 of the door opening valve remains in its normal position so that the communication between the door closing pipe 12 and thedoor closing side of the door engine 8 is maintained. Since the door opening side oi the door engine 8 is supplied with fluid under pressure and the door closing side is connected to atmosphere it operates to open the door controlled thereby. WVhen it is desired toclose the door atthe operating end of the car, the motorma-ns valve 1 is moved to adoorclosing position in which fluid'under pressure is supplied to the-door closing pipe 12 and the door opening pipe 10 is connected'to atmosphere. Fluid under pressure is thereby supplied to the door closing side of the door engine 8 whereupon it operates to close the door at the operating end.

Let it now be assumed that both doors of the car are to be controlled from the operating end, which we assumed to be the end where the motormans valve 1 is situated.

The cut out cock 17 which is at the operating comp ipe the door opening side of the door engine 9 and establishes communication between the pipe lt and the door opening side of the door engine 9 so that fluid under pressure is suppliedthereto. The adinission'ol fluid under pressure to the pipe le also operates engines 8 and '9 are operated to open the doors controlled thereby. \Vhen the motor mans valve 1 is moved to a door closing POSltlOil the pipe 1% is connected to atmosphere through the pipe 10. the door-opening side of the door engine 9 and reduces the pressure on the top of the diaphragm 22 of the door operating valve When the pressure in the pipe 14 drops to a predetermined value the valve 25 is restored to its normal position by the spring 22-3 in which position communication is again established between the door closing pipe 13 and the door closing side of the door engine 9 whereupon the door engine 9 is operated to close the door at the non-operating end of the car. From the above description it will be apparentthat when the car is operated from the end where the inotormans valve 1 is situated, the door engine 8 only is controlled by the motorman when the cut out cock 17 is in one position, and the door engines 8 and 9 are sii'nultaneously controlled by the motorinan when the cut out cook 17 is in the other position. Furthermore, it will be evident from the above description that when the car is operated. from the other end, the motorma-n will be able to control the door engine 9 only when the cut, out cock 19 is in the position in which it establishes connect-ion between the pipe 15 and atmosphere and will be able to control the door engines 8 and '9 simultaneously when the cut out cock 19 is in the position in which it establishes communication between the door opening pipe 11 the pipe 15.

l/Vhile we have shown one embodiment of our invention various modifications and changes may be made without departing from the spirit and scope of our invention and we aim to, cover in the appended claims all such modi ications and changes.

What we claim as new and desire to secure by Letters Patent of the United States, is

1. In a car door control equipment, the combination of a fluid operated door engine at each operating end ofthe car for operating a door there-at, source of fluid pressure, a manually controlled door valve at each operating end of the car arranged to This exhausts establish communication between said door closing side of the engine and atmosphere.

6. In a car door control equipment, the combination of a fluid operated door engine at each end of the car for operating a door thereat, each engine having a door opening pipe and a door closing pipe, a source of fluid pressure, a manually controlled door valve at each end of the car arranged when in the door closing position to establish con munication to the door closing pipe of the engine at the corresponding end so that fluid under pressure is supplied thereto and to establish con'nnunication between the door opening pipe of said engine and atmosphere and arranged when in the door opening position to establish communication between said source and the door opening pipe of the engine at the corresponding end and to establish com-- munication between the door closing pipe of said engine and atmosphere, a valve device in each door opening pipe adapted to be operated by the fluid pressure in the door opening pipe at the other end of the car to cut oil communication between the door opening pipe in which said valve device is connected and the door opening side of the engine at the end of the car at which the respective valve device is located and to establish communication between the door opening side of said engine and the door opening pipe at the other end of the car, a valve device in each door closing pipe adapted to be operated by the fluid pressure in the door opening pipe associated with the engine at the other end of the car to out off communication between the door closing pipe in which said valve device is connected and the door closing side of the engine at the end of the car at which the respective valve device is located and to establish communication between said door closing side of the engine and atmosphere, and a manually controlled valve at each end of the car for controlling the communication between the door opening pipe at the corresponding end. and the valve devices at the other end of the car.

7. In a car door control equipment, the combination of a fluid operated door engine at each end of the car for operating a door thereat, each engine having a door opening pipe and a door closing pipe, a source of fluid pressure, a motormans valve at each end of the car arranged when in the lap position to establish communication to the door ciosing pipe of the engine at the correspond ing end so that fluid under pressure is supplied thereto and to establish communication between the door opening pipe of said engine and atmosphere, and arranged when in the dooropening position to establish communication between said source and the door opening pipe of the engine at the corre sponding end and to establish communication between the door closing pipe of said engine and atmosphere, a valve device in each door opening pipe adapted to be operated by the fluid pressure in the door opening pipe at the other end of the car to cut oil? communication between the door opening pipe in which the valve device is connected and the door opening side of the engine at the end oi the car at which the respective valve device is located and to establish con1- munication between said door opening side of said engine and the door opening pipe 1 at the other end, and a valve device in each door closing pipe adapted to be operated by thereat, each engine having a door opening a pipe and a door closing pipe, a source of fluid pressure, a motormans valve at each end of the car arranged when in the lap position to establish communication to the door closing pipe oi the engine at the corresponding end so that fluid under pressure is supplied thereto and to establish communication between the door opening pipe of said engine and atmosphere, and arranged when in the door opening position to establish communication between said source and the door opening pipe of the engine at the correspending end and to establish communication between the door'closing pipe of said engine and atn'iosphere, a valve device in each door opening pipe adapted to be operated by the fluid pressure in the door opening pipe at the other end of the car to cut of? communication between the door openin pipe in which the valve device is connected and the door opening side of the engine at the end of the car at which the respective valve device is located and to establish communication between said door opening side of said engine and the door opening pipe at the other end, a valve device in each door closing pipe adapted to be operated by the fluid pressure in the door opening pipe associated with the engine at the other end of the car to cut off communication between the door closing pipe in which the valve device is connected and the door closing side of the engine at the end of the car at which the respective valve device is located and to establish communication between said door closing side or said engine and atmosphere, and a manually controlled valve at each end of the car for controlling the con'imunication between the door opening pipe at the corresponding end and said valve devices at the other endof the car.

.9. In a car door control apparatus, the

combination with a door engine, of a door controlling valve device at each end of the combination with a door engine, of a door controlling valve device at each end of the car, a' door control pipe leading fronreach 'door controlling valve device to the door engine, and a double check valve operated by the pressure of fluid supplied from one controlling'valve device through its control pipe for opening communication from said control pipe to the door engine and for closing communication from said control pipe and the door engine to the other control pipe. l

11. In V combination with two door engines, of a doorcontrollingvalve device ateach end of the car, a door control pipe leading from each controllingvalve to each door engine,

and a double check valve for controlling communication from each control pipeto operated by fluid pressure in one of said control pipes for establishing communication from said controlpipe to the door engine and for closing communication from said control pipe and door engine to the other control pipe.

14. In a car door control equipment, the combination with a door engine, two. door controlling valves, two door controlfpipe s leading from one of said door controlling valves to said engine, another door control pipe leading from the other door controlling valve to said door engine,a'nd means responsive to fluid pressure in one of said door control pipes or cuttlng off communlcation between said door engine and another of sa d door control pipes.

'15. In a car door control equipment, the combination with adoor engine, two door fa car door control apparatus, the

controlling-valves, two door control pipes leading from oneof saiddoor controlling valves to'said engine, another door control pipe leading from the other door controlling valve to said door engine, and valve devices responsive toifluid pres sure insaid last men tioneddoor controlpipe for cutting off C0111} inunication between said door engine and both of theother door control pipes and "for establishing communication between i j said door engine and the door controlpipe leading from said other'door controlling'valve to said door engine. r f

16. In a car door controlequipment, the combination with a door engine, two door controlling valves, two door control pipes leading fronr'one of said door controlling valves to said-engine, another door control pipe leading from theother door controlling valve, valve devices responsive to fluid pressure in said last mentioned door control pipe for cutting off communication between ooth of the other door control pipes and said door engine and for establishing communica tion between said door en inc and the door control pipes leadingtoisaid other door controlling valve, and a manually controlled valve for controlling communication between said valve devices and the door control pipe valve. v V

17. In a car "door control equipment, the combination with'a door engine, two door controlling valves, a door opening pipe and a door. closing pipe-leading from one. of said door controllingflvalves to said'door engine, a door opening'pipe leading from the other door controlling valve to 's'aid door engine, andvalve means responsive to fluid pressure in said last mentioned door opening pipe for cutting off communication between said door enginejand the door opening and closing pipes leading rr m said one of said door controlling valves, 18. In a car door control'equipment, the combination with adoorengine, two door conti'ollingvalves, a door 0 ening'pipe and a door closing pipe leading door controlling valves to said door en ine, a door opening pipeleading from the other; door controlling valve, valve means responsive to fluid pressure in said last mentioned leading from said other-door controlling ro'm one of door opening pipe for cutting off communication between said 'door I engine and the door opening and closingpipes leading from said one ofjsa d door controlling valves, and

a manually controlledfvalve'for controlling rcomniunication between said valve i means and the door openingpipe leading from said other door 'controllin valve. f

In witness whereo wehavje hereunto set our hands'thislilth daj of February, 1921. p GEORGE MACLOSKIE. H

'CHARLES 

